Water-tight joint for masonry walls.



UNTTED STATES Patented March 14, 1905.

PATENT OFFICE.

WATER-TIGHT JOINT FOR NIASONRY WALLS.

SPECIFICATION forming part of Letters Patent No. 784,926, ated Iaroli 14, 1905.

Alpplioation filed November 25, 1904. Serial No. 234,203.

To fr/ZZ whom, it may concern:

Be it known that I, CHARLES M. CRAWFORD, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in W ater-'Iight Joints forMasonry lValls, of which the following' is a specification.

My invention relates to an improvement in masonry construction, and has for its' object the provision of an improved joint located between adjacent monoliths comprising said masonry and so constructed as to form a watertight structure which will not be impaired by the expansion and contraction of said monoliths.

Further objects and advantages of the invention will be set forth in the detailed description which now follows.

In the accompanying drawings, Figure 1 is a horizontal sectional View through two monoliths, showing the improved joint located between said monoliths. Fig. 2 is a perspective view of a mold hereinafter described. Fig. 3 is an enlarged horizontal sectional view showing the position the parts assume when contraction of the monoliths causes the fissures between said monoliths to widen; and Fig. 4 is a vertical section of a wall or dam, showing the joint formed horizontally.

Like numerals designate similar parts in all of' the figures of the drawings.

Referring to the drawings, the numeral 5 designates a monolith of artificial stone. It is to be understood thatIdo not limit myself to any specific form of articial stone, as the joint which forms the subject-matter ofthe present invention may be utilized in any form of masonry construction in which the material formingthe masonry is first placed in positioni n a plastic or semiplastic condition or where the constituentparts of the masonry are placed in molds or forms and afterward harden or set. l/V hen the material forming block 5 is placed in the mold or form, said mold is so arranged that a recess 6 will be formed in said block. After said material hai-dens and the mold containing block 5 has been removed a trough-like mold 7 is placed in position. The mold 7 comprises the substantially semicircular body portion 8, the flanges 9, and the anchors lO. Said mold is placed in position with the fianges Qresting against the face of' block 5 adjacent to the edges of recess 6, as is best illustrated in Fig. l. The material forming the second block 11 is then placed in a suitable form, mold 7 serving when this is done to prevent said material from entering and filling recess 6. After the material which forms block 11 has hardened or set the mold 7 is securelyanchored thereto by the anchors 10. The channel or passage formed by the walls of recess 6 and the inner face of mold 7 is then filled with a suitable plastic material 12 of such consistency as may be necessary to render the joint water-tight.

By anchoring the mold 7 to block 1l the possibility that contraction of the blocks would cause block l1 to move away from the mold instead of carrying said mold with it, and thereby form a passage between said mold andn said block, is provided against.

In Figs. l and 3 the groove or recess to be filled with plastic material is shown as a vertical recess. In Fig. 4 said recess is shown as being formed horizontally in blocks of artificial stone. There the recesses are formed vertically, the plastic filling material l2 may be poured in from the upper ends of' said re cesses; but where the recesses lie in a horizontal plane it is necessary to provide other means for filling them with the plastic material. 'Io that end I have provided the tubes l4,one of which is illustrated in Fig. 4. 'Ihese tubes are threaded into the mold 7 in the place of anchors l0 and are provided with ribs l5 to render their engagement with the adjacent mass more secure, although these ribs may be omitted, if preferred.

In constructing a wall or dam in which it is intended that the entire structure shall form practically one integral mass it has been found that at the point where a days work comes to an end and the concrete hardens it is dif'- ficult to establish perfect cohesion between the new iwork 17 and the old work 18 when work is again resumed and that the resulting masses form practically separate blocks. To

render the junction of said new and old work perfectly watertight, the horizontal joint IOO shown in Fig. 1 is provided. The joint is the same as is illustrated in Figs. 1 and 3 except that it lies in a horizontal plane and that the filling-tubes 14 have been substituted f'or the anchor-bolts 10. WVhen work is resumed, the joint is filled with plastic material through tubes 14. By the time the concrete comprising the new work reaches the tops of' the tubes the plastic material, which is heated when it is poured into the joint, has cooled sufiiciently to permit the filling in of' the form to any desired height, thereby sealing the tops ofl said tubes.

From the foregoing description it will be seen that simple and efiicient means are hereby provided for rendering the junction oi monoliths comprising a masonry structure water-tight. While the elements herein shown and described are well adapted to serve the purpose for which they are intended, it is to be understood that the invention is not limited thereto, for changes may be made in the details thereof without departure from said invention.

Having described my invention, what 1 claim as new is4 1. A masonry construction consisting oi a plurality ofl masses of artificial stone nhaving their adjacent f'aces recessed to thereby form a series of channels between said masses, a

mold forming one of the walls of each ofl said channels, and a plastic filling' material in said channels.

Q. A masonry construction consisting of' a plurality of' masses ofl artificial stone having recesses formed in their adjacent faces to thereby form a series of' channels between said masses, trough-like molds forming one of the walls of' each of` said channels, and means f'or anchoring said molds to their adjacent masses.

3. A masonry construction consisting of' a plurality of masses of` artificial stone having recesses formed in their adjacent faces to thereby form a series of channels between said masses, closures 'f'or one side ofl said recesses, and means for anchoring said closures to their adjacent masses.

1. ln a masonry construction the combination with a plurality ofl masses of artificial stone having channels between their adjacent faces of molds forming one of' the walls of' each oi said channels, filling-tubes carried by said molds, and flanges or ribs upon said tubes.

1n testimony whereof l affix my signature in presence ofl two witnesses.

CHARLES M. CRAWFORD.

fitnessesz J osIAH H. Pneu, EDrrI-r- M. AAB. 

